plugging coolant holes in my block - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 10-04-2008, 09:26 AM
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Quote:
Originally Posted by SSedan64
Dark, why are you using copper gaskets? You could use some of the Cometic MLS gaskets. They'll custom make what ever you want.>
http://www.cometic.com/custom.aspx
my block is oringed and I plan on over 20lbs of boost

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  #17 (permalink)  
Old 10-04-2008, 09:26 AM
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Quote:
Originally Posted by darkostoj
also my AFR's have straight plugs
Must be the angle of the Pic. Thought they were angled. The AFR's do relocate the plug position tho' like Vortecs.
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Old 10-04-2008, 09:30 AM
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Quote:
Originally Posted by darkostoj
my block is oringed and I plan on over 20lbs of boost
I believe Cometic can make them for that App. also. + they're reusable. Check with them with your specs.
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Old 10-04-2008, 09:33 AM
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Check out the Phuzion technology. These can hold a seal even in the event of a head liftoff.
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Old 10-04-2008, 09:42 AM
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Quote:
Originally Posted by darkostoj
well it seems like copper head gaskets already have a bad problem with sealing coolant, and these 4 holes go to a hole in the gasket that doesnt even go anywhere
Here are two links for your consideration. The first is the recommended head gaskets when using aluminum heads. Scroll down to read. The second is Frequently Asked Questions.

Gaskets

FAQ

I do not suggest using the copper gaskets when using aluminum heads. However, an old "trick" when using solid copper gaskets to help them seal is to spray paint them with either copper or aluminum paint (both sides) and install them while the paint is still wet. The metallic particles that are suspended in the paint will seal the pores in the metal.

All solid copper gaskets can be re-used if they are annealed first. Copper becomes "work hardened" when used and need to be soft to seal correctly. This is done by heating the copper up to cherry red then immediately quenching them in water. They will change color; but will be "dead" soft and seal very well.
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Old 10-04-2008, 03:57 PM
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well its too late to run a MLS gasket because I got a deal on this shortblock and it was already O-ringed so it has to be copper head gaskets. I got some newer type head gaskets that are coated on both sides with a type of rubber coating which allows them to be installed dry and are supposed to be the best as sealing these gaskets up. I just wanted to take the extra step and possibly sealing up those 4 little coolant holes to help it seal up even more...but i've never heard of it being done
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  #22 (permalink)  
Old 10-04-2008, 04:14 PM
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I just thought I would mention this.

On every o'ringed block, I have used nothing but copper head gaskets, along with studs not bolts.

I also spray both sides of the gasket with 2 coats of copper coat. I let the first coat dry, and right after the second coat goes on, I put it together wet.

Also, every last one of them has had aluminum heads.

I have never had a leaker doing this.

Last edited by carsavvycook; 10-04-2008 at 04:16 PM. Reason: addition
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Old 10-05-2008, 11:19 AM
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I wouldn't worry about leaks from those holes, the way I see it the pressure on the head gasket at that location should be pretty much the same as if the heads had an opening there.
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Old 10-05-2008, 08:45 PM
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Quote:
Originally Posted by carsavvycook
I just thought I would mention this.

On every o'ringed block, I have used nothing but copper head gaskets, along with studs not bolts.

I also spray both sides of the gasket with 2 coats of copper coat. I let the first coat dry, and right after the second coat goes on, I put it together wet.

Also, every last one of them has had aluminum heads.

I have never had a leaker doing this.
i have studs also. I have heard many different ways of doing the copper head gaskets. I even bought a spray can of hylomar that cost me around $30. I got flatout rubber coated gaskets and I'm going to do a super thin coating of RTV(so thin you can see through it) around the water port gaskets on both sides of the gasket. Once I break in the cam i'm going to retorque the heads. How many times have you done them?
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  #25 (permalink)  
Old 10-05-2008, 09:06 PM
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Over the years, I can remember 27 times. The last one was almost 5 years ago.



I am always open for suggestions, on anything else that works. Let me know what you decide to do, and how well it holds up.

Last edited by carsavvycook; 10-05-2008 at 09:09 PM. Reason: addition
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Old 10-06-2008, 03:58 PM
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Quote:
Originally Posted by darkostoj
I noticed that my AFR heads don't have a lot of coolant holes that my block has. I am going to be running copper head gaskets and I was thinking of tapping those coolant holes that don't go anywhere with a plug in the block. This way there will be a lot less places where there is a chance of coolant leaking. anybody ever heard of this?
It is generally thought that aluminum heads don't need the directed coolant on the exhaust seat and spark plug area that cast iron does. However, if you're running a blower with these heads I'm not so sure I block off the ports in the block, you just might need the extra cooling once you see how this behaves in service. Then you might find it necessary to drill these holes into the head if you're having problems with spark plug and or valve life.

Bogie
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